Summary
Highlights
Alina is the victim of an attempted homicide, found in a coma. Her estranged husband, Andre, is the prime suspect as he was found holding the gun. Nikita, a neighbor, is also present and offers a conflicting testimony. This sets the stage for a detailed forensic investigation to determine the truth.
Forensic expert Ivan Larionov explains that crime scenes contain not only visible but also poorly visible and invisible traces. Experts must wear special uniforms to avoid contamination. Using backlighting, seemingly clean surfaces reveal numerous small objects like hair, dust, and fabric fibers, which are crucial for evidence collection. The emphasis is on meticulous collection without damage.
The gun used in the crime is handled with extreme care to preserve DNA, grease deposits, fingerprints, and microparticles. It's packed in an air-permeable cardboard box, contrary to common movie portrayals, to prevent biological samples from deteriorating. Fingerprints are collected from all individuals present, with detailed explanations of ridge patterns, individual characteristics, and the laborious manual process of matching them. A key finding: Andre's index finger print is found on the trigger, confirming he held the weapon.
Experts analyze clothing from the victim and suspects for microfibers. Using magnifying glasses and microscopes, they identify material composition and compare fibers. Red polyester fibers from Alina's jumper, blue cotton from Andre's t-shirt, and white synthetic from Nikita's shirt are examined. The presence of fibers from both men on Alina's jumper, and from Alina and Nikita on Andre's t-shirt, suggests interactions. Crucially, the absence of blue fibers on Nikita's white shirt, despite his presence, suggests an earlier arrival at the scene than Andre, raising doubts about his testimony.
An experiment is conducted where three individuals, two of whom fire different guns, are tested for gunshot residue (GSR). Experts explain that GSR consists of microscopic particles from the primer, not gunpowder, containing elements like mercury, lead, and antimony. Samples are collected from hands and faces using adhesive tape. An electron microscope and x-ray fluorescent analyzer are used to detect and analyze these particles, allowing experts to differentiate between those who fired and those who merely handled a weapon.
Further analysis of GSR from Andre and Nikita reveals that Andre only had GSR on his palms, indicating he handled the gun but didn't fire it. Nikita, however, had GSR on his palms, the back of his hands, hair, and face, confirming he fired the weapon. This evidence shifts suspicion from Andre to Nikita. The video also showcases the examination of ordinary household items like threads, nails, paper, and dust under high magnification, revealing a complex microscopic world rich with potential clues.
Forensic examination of wine glasses from the scene reveals Nikita's fingerprints, indicating he spent time with Alina, contradicting his earlier statements. The use of UV light and oblique light on pillows uncovers hairs that could contain DNA. DNA extraction from hair follicles and buccal cells (cheek cells) allows for direct comparison. Through DNA sequencing, a hair found on Alina's pillow is conclusively matched to Nikita, confirming his intimate involvement with Alina. This evidence reveals that Nikita and Alina were having an affair, and Alina's threats to expose it to his wife led Nikita to shoot her with Andre's gun, misdirecting suspicion onto Andre.
The video concludes by reiterating that while the case was a dramatization, it accurately reflects the dedication and precision of forensic experts. Their meticulous work, often under challenging conditions, is crucial in solving real crimes. The profound impact of their findings on individuals' lives emphasizes the ethical responsibility and unwavering commitment required in forensic science.